Correlation-based modeling and separation of geomagnetic field components

Matthias Holschneider , Vincent Lesur (1) , Stefan Mauerberger , Julien Baerenzung

1 IPGP - Institut de Physique du Globe de Paris

We introduce a technique for the modeling and separation of geomagnetic field components that is based on an analysis of their correlation structures alone. The inversion is based on a Bayesian formulation, which allows the computation of uncertainties. The technique allows the incorporation of complex measurement geometries like observatory data in a simple way. We show how our technique is linked to other well-known inversion techniques. A case study based on observational data is given.

Keywords: Field separation; geomagnetic modeling

Domains: Sciences of the Universe [physics]; Earth Sciences

Matthias Holschneider, Vincent Lesur, Stefan Mauerberger, Julien Baerenzung. Correlation-based modeling and separation of geomagnetic field components. Journal of Geophysical Research : Solid Earth, 2016, 121, pp.3142-3160. ⟨10.1002/2015JB012629⟩. ⟨insu-03748796⟩